18249846 has 16 divisors (see below), whose sum is σ = 36578304. Its totient is φ = 6070184.

The previous prime is 18249841. The next prime is 18249877. The reversal of 18249846 is 64894281.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18249798 and 18249807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 6041.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144).

Almost surely, 2^18249846 is an apocalyptic number.

18249846 is an abundant number, since it is smaller than the sum of its proper divisors (18328458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18249846 is a wasteful number, since it uses less digits than its factorization.

18249846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6555.

The product of its digits is 110592, while the sum is 42.

The square root of 18249846 is about 4271.9838482841. The cubic root of 18249846 is about 263.2811308511.

The spelling of 18249846 in words is "eighteen million, two hundred forty-nine thousand, eight hundred forty-six".